/*
	Copyright (C) 2009 Salil Bhagurkar
	
	This file is part of ViSE
	
	ViSE is free software: you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.
	
	ViSE is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU Lesser General Public License for more details.
	
	You should have received a copy of the GNU Lesser General Public License
	along with ViSE.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef _PIO_
#define _PIO_

#include <types.h>

#define iodelay() \
	asm("pushl %eax; inb $0x80,%al; inb $0x80,%al; popl %eax")

#define inl(port) \
({ unsigned long _tmp__; \
	asm volatile("inl %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })

#define inl_p(port) ({		\
	unsigned long r;	\
	r = inl(port);		\
	iodelay();		\
	r;			\
})

#define inw(port) \
({ unsigned short _tmp__; \
	asm volatile(".byte 0x66; inl %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })
	
#define sys_inw(port) \
({ unsigned short _tmp__; \
	asm volatile("inw %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })

#define inw_p(port) ({		\
	unsigned short r;	\
	r = inw(port);		\
	iodelay();		\
	r;			\
})

#define inb(port) \
({ unsigned char _tmp__; \
	asm volatile("inb %%dx, %0" : "=a" (_tmp__) : "d" ((unsigned short)(port))); \
	_tmp__; })

#define inb_p(port) ({		\
	unsigned char r;	\
	r = inb(port);		\
	iodelay();		\
	r;			\
})


#define outl(port, val) \
({ asm volatile("outl %0, %%dx" : : "a" (val) , "d" ((unsigned short)(port))); })

#define outl_p(port, val) ({	\
	outl(port, val);	\
	iodelay();		\
})

#define outw(port, val) \
({asm volatile(".byte 0x66; outl %0, %%dx" : : "a" ((unsigned short)(val)) , "d" ((unsigned short)(port))); })

#define outw_p(port, val) ({	\
	outw(port, val);	\
	iodelay();		\
})

#define outb(port, val) \
({ asm volatile("outb %0, %%dx" : : "a" ((unsigned char)(val)) , "d" ((unsigned short)(port))); })

#define outb_p(port, val) ({	\
	outb(port, val);	\
	iodelay();		\
})

#endif
